The Protective Crystal deals damage to several air targets at once. It can not attack close-range targets.
|Level 1||Level 2||Level 3|
|Level 4||Level 5|
The Protective Crystal level increases with the level of the Castle. You can upgrade them and provide your advancing village with better defences.
|Protective Crystal level||-||1||2||3||4||5|
Protective Crystal characteristics - hitpoints, damage per second, as well as time and cost of upgrade - increase with each upgrade.
|Gold||Sand||Hitpoints||Damage per second||Time||Castle level|